Extending NYPL Core Ontology for Digital Assets

The NYPL Core Ontology may be extended through the PCDM model to accommodate digital files, both born digital resources and digitized surrogates of physical resources.

Digitized surrogates may be associated with an NYPL resource (Collection, Component, or Item) through a Capture -- the physical constituent part represented by the file, for instance, a page of a book or the back of a photograph:

Born digital files may be associated with an NYPL resource (Collection, Component, or Item) directly:

A Capture is a physical constituent part of an NYPL resource (Collection, Component, or Item), such as a page of a book, the front of a postcard, or a reel of an audio recording. Captures have metadata properties that relate to the physical rather than intellectual nature and structure of a resource.

A File is a sequence of binary data. The metadata typically includes at least basic technical metadata (size, content type, modification date, etc.), but can also include properties related to preservation, digitization process, provenance, etc. Files must be contained by exactly one Collection, Component, Item, or Object.

Namespaces